diff --git a/server/conf-custom/error/empty.dir b/server/conf-custom/error/empty.dir
new file mode 100644
index 0000000000000000000000000000000000000000..95ba9ef37cca69318bcba17e67cd44ae84bd41e1
--- /dev/null
+++ b/server/conf-custom/error/empty.dir
@@ -0,0 +1 @@
+This empty directory is needed by ISPConfig.
diff --git a/server/conf-custom/index/empty.dir b/server/conf-custom/index/empty.dir
new file mode 100644
index 0000000000000000000000000000000000000000..95ba9ef37cca69318bcba17e67cd44ae84bd41e1
--- /dev/null
+++ b/server/conf-custom/index/empty.dir
@@ -0,0 +1 @@
+This empty directory is needed by ISPConfig.
diff --git a/server/conf-custom/install/empty.dir b/server/conf-custom/install/empty.dir
new file mode 100644
index 0000000000000000000000000000000000000000..95ba9ef37cca69318bcba17e67cd44ae84bd41e1
--- /dev/null
+++ b/server/conf-custom/install/empty.dir
@@ -0,0 +1 @@
+This empty directory is needed by ISPConfig.
diff --git a/server/conf-custom/mail/empty.dir b/server/conf-custom/mail/empty.dir
new file mode 100644
index 0000000000000000000000000000000000000000..95ba9ef37cca69318bcba17e67cd44ae84bd41e1
--- /dev/null
+++ b/server/conf-custom/mail/empty.dir
@@ -0,0 +1 @@
+This empty directory is needed by ISPConfig.